LM324 Operational Amplifier hc-29 These are Carbon Film Resistor

These are Carbon Film Resistor with a value of 750 ohm 1/8W and tolerance of ±5%

Tinned Copper wires are desirable for soldering as they make connections and soldering is an easy task given tin is a primary component in solder

IXGP70N33 is a medium frequency insulated-gate bipolar transistor with high current handling capability

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Cable glands allow you to put a cable into a pre-drilled hole

LM324 Operational Amplifier hc-29 These are Carbon Film ResistorThese devices are made up of four separate high gain frequency compensated operational amplifiers that are meant to operate from a single power source across a wide voltage range. Split supply operation is also allowed if the voltage difference between the two sources is 3 V to 32 V (3 V to 26 V for the LM2902) and VCC is at least 1. 5 V higher than the input common mode voltage. The low supply current drain is unaffected by supply voltage magnitude.